69472225 has 9 divisors (see below), whose sum is σ = 86197267. Its totient is φ = 55544440.
The previous prime is 69472223. The next prime is 69472261. The reversal of 69472225 is 52227496.
It is a happy number.
The square root of 69472225 is 8335.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 25010001 + 44462224 = 5001^2 + 6668^2 .
It is not a de Polignac number, because 69472225 - 21 = 69472223 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (69472223) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40842 + ... + 42508.
Almost surely, 269472225 is an apocalyptic number.
69472225 is the 8335-th square number.
69472225 is the 4168-th centered octagonal number.
It is an amenable number.
69472225 is a deficient number, since it is larger than the sum of its proper divisors (16725042).
69472225 is an frugal number, since it uses more digits than its factorization.
69472225 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3344 (or 1672 counting only the distinct ones).
The product of its digits is 60480, while the sum is 37.
The cubic root of 69472225 is about 411.0901486078.
The spelling of 69472225 in words is "sixty-nine million, four hundred seventy-two thousand, two hundred twenty-five".
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